"Silent top of the range graphics card cooling? More and more of us work towards a quieter pc which means a few low rpm fans or if possible none at all. However, as computers get faster they all generate more heat, look at any middle to top of the range graphics card on the market today and you will find it has a heatsink and fan combo on. Most of these fans are small, fast spinning and whiney little things that make you grate your teeth and keep you awake at night. So is it possible to cool one passively eliminating this problem? Apparently Zalman seem to think so!.........
.........It performs well considering its just two large passive heatsinks and a thin tube connecting them and does what it’s meant to do perfectly as long as you don’t have any incompatibilities. If you’re a hardcore overclocker and will want to overclock the core then I’d recommend at least one fan over it or a proper heatsink and fan combo."

FULL STORY @ HWGURU(http://www.hwguru.com/view_review.asp?reviewid=48)